chore(refactor): multiple changes/cleanups Simplify 'for x in [list val]; alist.append(x)' to 'alist = list([list val])'. Easier to read as copy of list. Also twice as fast although speed not an issue. Remove unneeded list() wrappers. Replace set(list comprehension) with set comprehension. Also add trailing ,'s to last element in tuples/lists. Add some noqa items for acceptable operations in context. Switch " ... \" ...\" ..." to: ' ... " ... " ...' to remove need to escape internal '"'. Change 'not x in y' to 'x not in y'.

try:
    # Python 3+
    from http import cookies as Cookie
    from http.cookies import BaseCookie, CookieError, SimpleCookie
    from http.cookies import _getdate as get_cookie_date
except ImportError:
    # ruff: noqa: F401, PLC2701
    # Python 2.5-2.7
    from Cookie import BaseCookie, CookieError, SimpleCookie
    from Cookie import _getdate as get_cookie_date